PLEASE HELP

[03redstanggt]

I have an 03 gt. and today my check engine light went on. So i checked it with my diablo tuner and came up with code p1151 then it says to refer to code p2197... It also says lack of H02521...Can any one help me out? Also my o/r h pipe has a good size exhaust leak where it mounts to the header... But i cant tighten the x pipe down anymore to fix it... can the be related? is it safe to drive the car? Thanks in advance....

 

[FordTard]

The codes are indicating that bank 2 (cylinders 5-8) are too lean but if you have a leak in your exhaust on that side those sensors will be reading that fresh air. The problem from here is that the computer will try to compensate for that lean condition by dumping unneeded fuel into that bank killing fuel mileage and reducing power.

Thats just what I think is going on. I do not know what H02521 is. Anyone else know?

 

[03redstanggt]

ok.. thanks... it all makes sense because i am getting 175 miles to the tank if im lucky...

 

[02nightmaregt]

Do you have Headers or stock manifolds? BTW this is tech Here comes the 5.0

 

[03redstanggt]

sorry about posting in the wrong forum... but they are stock headers

 

[02nightmaregt]

Hmm well i don't think an exhaust leak would throw a code Could be the o2's. If this doesn't get moved soon try posting in the tech section and see what happens

 

[hotcobra03]

U blew your o2. To be exact H20S21is drivers side front.po2197 and 1150 are lack of switching fuel trim at limit.is your vacuum hose for evap off the big 1 not the tiny at throttlebody inlet?

 

[hotcobra03]

H is 4 heated and s is switch.21 is drivers front.22 is driver rear with the blue plug and 12 ir pass rear with violet

 

[03redstanggt]

thanks everyone... I will check the car this weekend when i get the time... But for now i cleared the codes and there is nothing yet.

 

[deftsound]

i have the same codes, except i replaced both of my 02 sensors and stil have the code, my tuner thinks its a problem with a circuit in the wiring harness